Excuse me, does anyone know the process of land law to treat domestic sewage? Excuse me, thank you.

It is a sewage pipe with small holes buried in the ground, and the sewage discharged through the pipe is absorbed by the land. I only know so much, if you have specific requirements and numbers to tell me, I can ask someone in the company to calculate it for you.

I have it on the courseware, send it to you by email.

Legal Analysis: There are five main types of sewage land treatment:

1. Slow percolation system: The sewage distribution load of the slow percolation system is generally low and the seepage speed is slow, so the sewage purification efficiency is high and the effluent quality is excellent. Wastewater is purified through processes such as filtration, sedimentation, adsorption and biodegradation.

It is suitable for soil with good water permeability and areas with low evaporation and humid climate.

2. Rapid leakage cover percolation system: Rapid percolation land treatment system is an efficient, low-consumption and economical sewage treatment and regeneration method. It is suitable for soils with good permeability, such as sandy soil, gravelly sandy soil, sandy mounds, etc.

Effluent is poured to the surface of the field and then quickly infiltrates into the ground and eventually into the aquifer. Irrigation and fallow irrigation are repeated to make the soil on the surface of the filter field in an anaerobic-aerobic alternating state, relying on soil microorganisms to decompose the dissolved and suspended organic matter trapped in the soil, so that the sewage can be purified.

3. Surface diffuse flow system: The surface diffuse flow system is suitable for permeable clay or sub-clay, and the best slope of the ground is 2 -8. Wastewater flows evenly and controllably on the ground by sprinkler irrigation or flood irrigation to the catchment canal located at the foot of the slope, where a small amount of wastewater is ingested, evaporated and infiltrated into the ground by plants.

Grass or other crops are planted on the ground for microorganisms to inhabit and prevent soil erosion, and tailwater can be collected for reuse or discharge.

Legal basis: Law of the People's Republic of China on the Prevention and Control of Soil Pollution

Article 3: The prevention and control of soil pollution shall adhere to the principles of prevention first, protection first, categorical management, risk management and control, responsibility for pollution, and public participation.

Article 4: All organizations and individuals have the obligation to protect the soil and prevent soil pollution. Land use rights holders engaging in land development activities for profit and repurposing, and enterprises, public institutions, and other producers and operators engaging in production and business activities, shall employ effective measures to prevent and reduce soil pollution, and bear responsibility for the soil pollution caused in accordance with law.

It's not the same thing. Sewage land treatment refers to the ecological engineering that uses soil-microorganisms-plants such as farmland and woodland to form terrestrial ecosystems to comprehensively purify pollutants. It can treat urban sewage and some industrial wastewater at the same time, through the biochemical cycle of nutrients and water, promote the growth of green plants, and realize the resource and harmlessness of sewage.

Advantages of sewage land treatment system:

1) Promote the recycling of phytonutrients in sewage, and the useful substances in sewage can be reused through the growth of crops; 2) Waste land, potholes and depressions can be used to treat sewage, and infrastructure investment is provincial; 3) The use of mechanical and electrical equipment is less, the operation and management are simple and low, and the energy is saved; 4) Greening the earth, adding beautiful scenery, improving the regional microclimate, and promoting the virtuous cycle of the ecological environment; 5) The sludge can be fully utilized, and the secondary pollution is small.

Sewage land treatment systems can also have a number of undesirable consequences if they are not properly designed:

1) Polluting soil and groundwater, especially causing heavy metal pollution, organic poison pollution, etc.; 2) lead to a decline in the quality of agricultural products; 3) Odor, mosquito and fly breeding, endangering human health, etc.

The sewage land treatment system is composed of sewage pretreatment equipment, regulation and storage equipment, transportation and distribution equipment, control system and equipment, land purification field and collection and utilization system.

The activated sludge method is the main method of biological treatment of wastewater with activated sludge as the main body. The activated sludge method is a sludge-like floc formed by the continuous introduction of air into the wastewater due to the reproduction of aerobic microorganisms after a certain period of time. It is inhabited by microbial communities dominated by colloidal pellets, which have a strong ability to adsorb and oxidize organic matter.

**In Yantai Jinzheng Environmental Protection Sewage Treatment, DTRO membrane manufacturer.

First of all, we must look at the main components of sewage, the key is not to create new pollution, can be absorbed and utilized by plants, oil and some substances that can not be used, can not enter the land, organic matter exceeds the digestion capacity of the land can not be discharged into the land. The unusable substances need to be cleaned up, and too much organic matter needs to be decomposed and digested by ammonia egg enzyme to reduce the pressure of digestion and absorption of land plants, and the smell of sewage pollutes the air, which needs to be eliminated with ammonia egg enzyme, which is the correct way to treat rural sewage in the land.