SPLASH Syarikat Pengeluar Air Sungai Selangor

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SPLASH is the concessionaire appointed by the Selangor State Govenrment to develop SSP3 on a Build, Operate and Transfer (BOT) basis. The main components of the scheme are the construction of the Sungai Selangor Dam, the realignment of the Kuala Kubu Bharu – Fresers Hill Road, and the construction of the Rasa and Bukit Badong water treatment plants. Upon completion, SPLASH is required to operate the dam and treatment plants for the duration of the 30 year concession, commencing from January 2000.

SPLASH is also the concessionaire for the Sungai Selangor Water Supply Scheme Phase 1 (SSP1) which it operates and maintains. SSP1 is a project in Bukit Badong initiated by the Selangor State Govenrment and it commenced operations in 1993. It was handed over to SPLASH in 2000 under the same concession as the SSP3.

History and Background

The Sungai Selangor Water Supply Scheme Phase 3 (SSP3) is a project initiated by the Selangor State Government in the wake of the 1998 water crisis which affected people from all walks of life in Selangor and the Federal Territory.

The SSP3 was identified as the most feasible solution to meet the ever increasing demand for water supply in Selangor and the Federal Territory.

With increasing industrial, business and commercial activities, this region has over the years, attracted people from other states.

With population growth, the demand for water has seen steep escalation. In 1990, the total water demand in Selangor and the Federal Territory was 1,600 million litres per day (MLD).

In 2000, the increase was almost two fold with demand up to 3,050 MLD and the demand is expected to increase to 6,205 MLD in 2010 and t0 7,642 MLD in 2020.

Sungai Selangor is the last water resource in the state which can be feasibly developed to meet the increasing demand. Beyond this, raw water has to be imported via interstate water transfer from Pahang.

The Operations

The Sungai Selangor Dam (SSD) and the Sungai Tinggi Dam (STD) are regulating dams located respectively at the riverheads of Sungai Selangor and Sungai Buloh, a major tributary of Sungai Selangor.

If in the past rain water during the rainy season would wastefully free-flow to the sea, with the existence of these regulating dams, the rain water would be collected and stored in their reservoirs. During the dry season, this stored water will be released into the drying Sungai Selangor to augment the flow of the river, ensuring sufficient water to meet the demand from the water treatment plants while helping the river maintain its eco-system.

SPLASH is tasked to efficiently manage and regulate the water releases from these two dams to enable sustainable storage and to ensure sufficient quantity of raw water in the river to meet the water treatment plant demand and other functional needs.

Environmental Management

SPLASH Environment Objectives

To achieve long-term environmentally sustainable development by:
minimising significant/adverse environmental impacts during implementation of construction activities and
adopting a pro-active approach to minimise potential occurrence of accidents/incidents and/or pollution at the SSP3 site during and after construction.

The detailed Environmental Impact Assessment (EIA) report for SSP3 was approved by the Department of Environment in June 1999. As an integral part of the EIA, SPLASH has incorporated a comprehensive environmental management program based on its six-monthly updated Environmental Management Plan (EMP). Fostering holistic approach to environmental management, SPLASH’s offers a structural and systematic method to incorporate environmental care in all aspects of its construction activities.

An environmental team, working together with a qualified Environmental Management Consultant was set up by SPLASH to control and monitor the construction activities or where control is difficult, to minimise or mitigate such effects with the final objectives of meeting the requirement of the Department of Environment. SPLASH stresses on an efficient implementation of EMP as it is crucial in minimising environmental damage and liabilities at the project site.

For continuous environmental performance improvement at site in order to achieve a long-term environmentally sustainable development, SPLASH has carried out the following:

Pre-construction

Establishment of pre-construction baseline monitoring values for various environmental parameters and the recommended mitigation measures in the EIA report before project commencement.

Construction Period

  • Site observation (site audit) and compliance audit
  • River water quality management
  • Construction and regular maintenance & upgrading of silt traps
  • Slope management
  • Waste (solid and construction) and wastewater management
  • Air quality management
  • As open burning is strictly prohibited at site, SPLASH took the initiative to use the Air Curtain Incinerator (ACI), a clean controlled-burning process permitted and approved by DOE. SSP3 is the first project site in Malaysia to adopt this system.
  • Schedule waste and hazardous material management
  • Noise and vibration quality management
  • Transportation and machinery management
  • Occupational safety and health management
  • Environmental Safety Procedure

All SPLASH personnel, whose work may create a significant impact upon the environment, we are given appropriate education and training in order to ensure that they conform with the environmental policy, procedures and requirements of the environmental management system, including emergency preparedness and response requirements.

A Safety, Health and Environment Committee is responsible for ensuring that safety at the work site is effectively implemented. Proper safety procedures and guidelines were established to ensure the working environment is safe and statutory requirement are complied with.
whois-protection

Protection of Raw Water Source

The Sungai Selangor Dam is part of the overall Sungai Selangor Water Supply Scheme that functions to regulate the flow in Sungai Selangor. This is to enable sufficient amounts of raw water to be reliably abstracted at the Rasa and Bukit Badong raw water intakes.
In addition, 197 square kilometres of the catchment area upstream of the dam has been gazetted as a forest and water catchment reserve, assuring protection from any development.

This protects the water source from any development that may have adverse effects on the quality of raw water. This in turn ensures raw water at the abstraction points continue to be of a quality viable for treatment.

Ecological Biodiversity

SPLASH puts great emphasis in conserving the ecological biodiversity at the project site and its surroundings as biodiversity is a critical factor in maintaining the stability of natural systems. The EIA study carried out has found that no endangered or endemic species of terrestrial flora and fauna is threatened with extinction due to this project.

This is due to the fact that the regulating dam site and impoundment areas are mainly logged-over forests and do not encroach into any ecologically sensitive areas. SPLASH nevertheless, maintains liaison with Selangor Wildlife Department to ensure the existing ecological biodiversity is further maintained.
Integrate

Integrated River Basin Management

To ensure future sustainability of Sungai Selangor as a reliable source of water, protection of water source alone is not sufficient. An effective planning and control of the whole river basin is essential. Integrated River Basin Management is an important strategy and viral ingredient in achieving successful water resource management in the country.

As a stakeholder, SPLASH contributes to the conservation of Sungai Selangor and its associated biodiversity by complementing and supporting the role of Lembaga Urus Air Selangor (LUAS) and “Jabatan Kawalselia Air Selangor” in managing the Sungai Selangor river basin.

In line with this, SPLASH has installed on-line raw water monitoring stations complete with early warning systems at strategically selected locations along Sungai Selangor, between the SSP3 Dam and the intake points at Bukit Badong.

This system enables continuous monitoring of river water quality and provides an early warning to water operators of potential raw water quality violations. At the same time, SPLASH is able to map out the pollution trend of river and advise LUAS and other related agencies of the status of Sungai Selangor accordingly.

Benefits and Social Responsibilities
Ensuring the economic feature of Selangor & the Federal Territory

The role of SSP3 is vital to ensure the continue d viability of these two most popular and economically dynamic regions of the country.

The Benefits of the SSP3 Project

An adequate supply of clean water vital for continued progress, providing a reliable supply for increasing domestic and industrial consumption in line with the Selangor State Government’s aim of becoming a developed state by 2005.
Creating numerous job opportunities for the local communities of Kuala Kubu Bharu and Kuala Selangor during construction as well as in the future operation of the dam and treatment plants after completion.

Promoting eco-tourism with recreational facilities and activities. The lake are of the dam will be developed with picnic areas, jogging trails and jungle trekking. In addition, the new road constructed skirts along the edge of the dam, providing road users a panoramic view of the lake enroute to Frasers Hill.
Revenues over a 30-year period is ensured for the Selangor State Government.

Preservation of Fireflies

It is acknowledged that the rapid development within and around Kampung Kuantan in Kuala Selangor, including activities such as aquaculture schemes, reclamation of land for industries and housing estates have, over the years contributed to the decline of the mangrove forests which is turn has had an adverse effect on the fireflies.
The State Government commissioned the Malaysian Nature Society (MNS) to conduct a detailed and comprehensive study on the fireflies in Kampung Kuantan. The MNS study revealed that:

Fast flowing, large volumes of water released from the dam can disperse pollutants to prevent them from having prolonged adverse effects on the riverine vegetation. The riverine vegetation is crucial for the breeding and survival of the fireflies.

The SSP3 has induced the government to draw up a long term conservation programme to protect the fireflies from extinction.
Strict regulatory measures in terms of land use to control and curtail development activities which are detrimental to the ecosystem are necessary for the surrounding areas where the fireflies are found.

New Settlements for the Orang Asli

The resettlement of the Orang Asli villages of Kampung Gerachi and Kampung Teretak were implemented smoothly. 84 families have been comfortably relocated to a site close to their former homes with all the facilities and amenities enjoyed by the urban communities and are yet close to nature.

Orang Asli Community Development Programme

Aimed at uplifting their standard of living, the Orang Asli community programmes provide opportunities for the Orang Asli to live in harmony with the nation’s other main stream communities.

Scholarships

A scholarship programme has been implemented in consultation with the Orang Asli Welfare Department (JHEOA). SPLASH provided scholarships to 5 students pursuing 3-year diploma courses at institutions of higher learning in Malaysia over the last two years. This is an on-going commitment from SPLASH to the Orang Asli where new students will be selected for scholarships annually.

SSP3 Components

  • A regulating dam.
  •  Two water treatment plants, each located in Rasa and Bukit Badong.
  •  The realignment of Kuala Kubu Bharu – Bukit Freser Road.
  •  Relocation of “Institut Kemahiran Belia Negara” (IKBN).
  •  Relocation of two Orang Asli villages comprising of 84 families.

SSP3 Water Treatment Plants

SSP3 has a design capacity of 1050MLD while that of the SSP1 is 950MLD. In total, SPLASH has a capacity of 2000MLD which is equivalent to 45% of the total water supply capacity in Selangor and the Federal Territory until new capacities from the Pahang-Selangor water transfer comes on stream.
Under SSP3, there are treatment plants in Rasa, Hulu Selangor and Bukit Badong n Kuala Selangor. The Rasa Treatment Plant has a design capacity of 250MLD while the Bukit Badong Treatment Plant has a design capacity of 800MLD.

1. INTAKE

At the intake, there is a river gate consisting of motorised gates which control the river level. From the river, raw water is channelled to the floating boom and a course screen which traps floating debris. The water then flows through a rotating band screen which traps smaller debris and sediments settle into sand hoppers built into the floor of the intake channel.

2. RAW WATER PUMPS

From here, the water is pumped to the treatment plant via a raw water pipe.

3. AERATOR

At the treatment plant, the raw water enters the aerator which is designed to create sufficient turbulence to achieve a dissolved oxygen content of 80% saturation at ambient temperature. Pre-lime and a primary coagulant, Poly Aluminium Chloride (PACI) are added.

4. MIXING CHAMBER

The raw water then flows to a flash mixing chamber where a flocculant aid (polyelectrolyte) is added. The polymer enhances floc formation for easier removal in the clarification process.

5. CLARIFIERS

Clarifiers perform the function of floc concentration, collection and discharge. Settled water overflows into collection channels for onward flow to the filters.

6. FILTERS

Rapid gravity sand filters perform the task of removing fine particles which are not settled in the clarification process. Clarified water is filtered through a sand filter media to trap unsettled particles.

7. FLUORIDATION

The filtered water is collected at the filtered water channel where Sodium Silicofluoride is added and the filtered water then flows to a clear water tank.

8. DISINFECTION AND PH CORRECTION

In the clear water tank, chlorine is added for disinfection and tests are carried out to ensure the treated water is free from pathogenic organisms. Hydrated lime is added for pH correction.

9. CLEAR WATER TANK

The tank provides sufficient contact tie for the disinfection and conditioning chemicals to work on the water as part of the treatment process.

10. TREATED WATER PUMPS

From the clear water tank, treated water is pumped to the balancing reservoir for off-take by the state water supply distribution company.

11. BALANCING RESERVOIR

Treated water stored here is gravitated to smaller service reservoirs which cater to the needs of the consumers. A custody transfer flowmeter records the volume of water supplied to the distribution company.

12. WATER QUALITY MONITORING

Treated water quality is tested in the plant laboratory to ensure that water passing through the plant is always clean and safe for consumption. An independent eternal testing laboratory is also engaged to ensure water quality compliance.

13. SUPERVISORY CONTROL AND DATA ACQUISITION (SCADA)

The SCADA System allows all functions of the plant to be automated and monitored from the control room.

14. SLUDGE LAGOONS

Sludge lagoons are provided for the storage and drying of sludge. The lagoons are used in rotation. As one lagoon is filled, it is isolated for drying and wet sludge is channelled into adjacent lagoon. Dried sludge is removed for disposal as a land fill at a sludge depository.

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