West District: Pipe unclogging, high-pressure pipe cleaning, pipe repair and inspection, septic tank cleaning, sludge suction, septic tank suction, toilet pumping, toilet cleaning, septic tank pumping, community septic tank cleaning.

Clear Mountain and Green Water (Beijing) Environmental Cleaning Service offers year-round contract pricing with discounts. Services include cleaning sewage pools, mud sludge extraction by vacuum trucks, sludge removal, wastewater extraction, sludge suction, silt removal, sedimentation pool extraction, wastewater pool cleaning, septic tank cleaning, septic tank cleaning, mud pool cleaning, wastewater pool cleaning, sludge pool cleaning, large-scale wastewater pool silt removal, transport for wastewater and sludge treatment plant, silt pool cleaning, sedimentation pool cleaning, grease trap cleaning, sludge suction and feces removal, drain trench unblocking, manhole cleaning, municipal pipeline cleaning, various municipal pipeline projects, pipe installation, water pipe installation and maintenance. We warmly invite property management communities, enterprises and institutions, schools, office buildings, hotels, factories, and more.

  If septic tanks are left uncleaned for an extended period, sludge can solidify, rendering the septic tanks virtually ineffective. Waste materials won't receive proper non-hazardous treatment and will be discharged directly into ditches. Moreover, in cases where sewage wells are highly sealed, gas overflow can even lead to explosions. This is why regular cleaning of Wuxi septic tanks is essential.
How to Clean Septic Tanks Promptly:
Based on national wastewater treatment design standards, the retention time of wastewater in the septic tank must be no less than 36 hours. The faeces and suspended impurities in the wastewater are retained and undergo anaerobic decomposition in the septic tank, achieving preliminary treatment. If there is only a small amount of effluent, the retention time must still be at least 6 hours.
How often should it be cleaned out? The domestic wastewater contains a large amount of feces, paper debris, and protozoa, with the concentration of suspended **substances being 50-200mg/L (BOD5). A septic tank is a treatment facility that utilizes the principles of sedimentation and anaerobic fermentation to remove suspended **substances from domestic wastewater, and is classified as a primary transitional treatment structure. The domestic wastewater contains a large amount of feces, paper debris, and protozoa... The concentration of suspended solid substances is 100~350mg/L, and the concentration of **substances (BOD5) is between 100~400mg/L, with the concentration of suspended **substances (BOD5) being 50~200mg/L.
Wastewater enters the septic tank and undergoes 12-24 hours of sedimentation, removing 50%-60% of suspended solids. After 12 hours of sedimentation in the septic tank, 50%-60% of suspended solids can be filtered out. The sludge settled down is subjected to anaerobic digestion for over 3 months, decomposing the substances in the sludge into stable inorganic matter, converting the raw sludge into stable mature sludge, altering the sludge structure, and reducing its moisture content. Therefore, it is generally recommended to clean out the septic tank more than once every 3 months. However, the actual amount of sludge in the septic tank should still be considered, and the specific cleaning time should be determined based on the actual situation.

Sewage treatment tanks are typically cleaned using two methods:
Wastewater Treatment System Cleaning Process (Automated)
1. Open the septic tank lid with an iron hook, then use a long bamboo pole (8m) to disperse the solidified debris layer inside the septic tank.
2. Drive the vacuum sewage truck to the work site, fit the sewage suction hose (3 spare 5-meter-long hoses) and place it into the septic tank.
3. Turn on the suction truck's switch and remove fecal waste until the solid sludge in the septic tank is mostly suctioned out, to prevent soiling the work site and the clothing of passersby.
4. Cover the septic tank lid and rinse the work site and all tools with clean water.
5. Septic tanks are typically cleaned every six months, but it depends on usage; if the volume is high, cleaning intervals should be shortened to prevent overflow. First-class tank removal: 90%; second-class tank removal: 75%; remove all hard surfaces from the tank.
6. After cleaning, visually inspect the well to ensure no debris floats on the surface, allowing for unobstructed flow and preventing wastewater from spilling onto the ground.
Sewage Treatment Plant Cleaning Process (Manual)
1. Open the septic tank cover with an iron hook, and then remove floating debris and sediment using a scoop and other tools.
2. Transfer the collected sediment into a live manure bag and have it transported away by a sanitation vehicle.
3. Use a portable pump to flush and clean the septic tank and ground until thoroughly clean.
4. Secure the manhole covers to prevent pedestrians from falling in and experiencing an accident.

Septic Tank Cleaning Steps:
First, open the septic tank for ventilation to prevent poisoning.
2. One feces-suction truck, select the size based on the site area; generally, a 5-ton truck is used.
3. Connect the water pipes and release the water. Position the sewage pipes, ensuring all connections are secure and no air leaks occur. Do not insert the sewage pipes directly into the septic tank bottom. First, use a feces stirrer to break up the surface sludge, then activate the pressure and use the vacuum suction to remove the surface sludge first. Any domestic waste must be retrieved first; otherwise, it may cause insufficient suction in the sewage pump truck and clog the pipes. Repeat this process until the truck is full, then remove it.
4. Clear the site and cover the manhole.

Cautionary Notes for Septic Tank Cleaning
1. Ventilate the septic tank cover for 10 to 15 minutes before opening, ensuring no one stands near the edge. It is strictly prohibited to light a fire, smoke, or operate machinery nearby to prevent fires or injuries.
2. Personnel must not enter the pool to work to prevent poisoning or drowning. If entry is unavoidable, it is mandatory to wear a respirator, protective chemical suit, and take all necessary safety precautions.
3. After the septic tank cover is opened, the worker must not leave the scene. After cleaning is complete, cover the cover immediately to prevent pedestrians from falling into the well and having an accident.
Septic Tank Cleaning Process
1. Activate the sewage truck's switch to suction feces and waste until the sediment in the septic tank is mostly removed, to prevent soiling the work area and pedestrians' clothing.
2. Cover the septic tank lid and rinse the work site and all tools with clean water.
3. Septic tanks are typically cleaned once a year, with the first tank cleared of 90%, the second tank of 75%, and the entire hard surface of the tank removed.
4. After cleaning, visually inspect the well to ensure no debris floats on the surface, allowing for smooth flow and preventing wastewater from overflowing onto the ground.
5. Use an iron hook to lift the septic tank cover, then stir the solidified debris layer inside with a long bamboo pole (8m).
6. Transport the vacuum sewage truck to the job site, fit the sewage suction hose (5 meters long, with 3 spares) into the septic tank.