Sustainable Programs

DLSU-D Sewage Treatment Plant

The university is in the process of upgrading and rehabilitation of the STP to be compliant with DAO 2021-19 wherein new physico- chemical parameters are added by the DENR-EMB for monitoring.

The activated sludge process, which involves the biological action of the continuously cultured bacteria in the mixed liquor and wastewater in the presence of air or oxygen is utilized by the STP. The activated sludge portion is separated from the treated wastewater in the succeeding treatment unit (settling tank) and for its subsequent return or recirculation to the aeration tank via sludge hopper where the slid sludge down and back to the aeration tank.

The STP was developed by DLSU-D in response to the passage of Republic Act 9275 otherwise known as the Philippine Clean Water Act of 2004.

The Sewage Treatment Plant (STP) is strategically situated in the lowest part of the west campus so that the collected wastewater will flow easily with the help of gravity.

Currently, the lake which serves as the rainwater catch basin provides the water during dry season to be used for watering plants within the Botanical Garden area. Aerators are installed to maintain the health index of the lake.

The STP is able to process 300 cubic meters of water per day. One hundred percent of water that goes through the process is cleared of particles that may cause damage to human health and pose danger to the environment. However, due to the absence of a cistern, which is still being planned for procurement, the treated water is released to the Imus river with no danger to the environment.

Phase 2 of the rehabilitation and upgrading program of the STP aims to reuse treated water for garden watering and toilet flushing. This is addressing the PAASCU recommendation to retain the Level IV Accreditation of the University.

Water Pollution Control

Water pollution control measures have been put in place such as the use of submersible pump /water aerator for maintaining the quality of the DLSU-D Lake, regular monitoring of lake water quality (physical and chemical parameters).

Each canteen have been required to install grease traps in their kitchen sink, while used cooking oil are collected and stored in Hazardous waste area.

Used engine oil of the school transport services and shuttle are also collected and stored in our Hazardous waste storage area and used laboratory chemical waste are collected in properly labeled amber bottles.

Water Conservation Measures

The University policy on watering plants is implemented from 7-9 am and 4-6 pm only. Toilets are also now using dual flush toilets to minimize consumption of water. This measure allows the University to prevent unnecessary waste of the resource thorughout the day.

Treated Water Consumption

The University maintains three (3) pump stations that draw groundwater which undergoes chlorination. The facility is managed by the BFMO. The water being used within the campus has also been certified as a safe by an accredited water quality testing laboratory, Prime Water Dasmarinas, through regular testing which is coordinated by the University Health Clinic.

Seventy five percent of treated water is consumed.

VERDE Gardening: Water Conservation

The VERTtical Drip Ecological (VERDE) gardening is among the advocacies of the One Million Trees and Beyond Movement to promote green spaces for gardening in an urban setting. One of its components is water conservation.

Preventive Maintenance Manual

The Buildings and Grounds Facilities Management Office (BFMO) is institutionalizing a Preventive Maintenance Manual to ensure regular monitoring and assessment of water facilities and equipment on the campus.

Water Efficient Structures

The University utilizes water efficient structures such as dual flush toilets that conserve water by a flushing mechanism that controls the water used in order to flush either solid or liquid waste. Currently, there are 584 dual flush toilets available to the Lasallian community.