Method for thoroughly eradicating water source pollution of rivers and lakes

Abstract

The invention relates to a method for thoroughly eradicating the water source pollution of rivers and lakes, which is the development of the field of environmental protection. The method has the technical characteristics that the rivers and the lakes are divided into five large functional zones, namely a river (lake) bed, an intertidal zone, a dam, a biological filtering and purifying zone as well as a farmland and a vegetable field outside the biological filtering and purifying zone. Crops such as pennisetum hydridum, mahonia fortunei, mulberry, salix psammophila, sea-buckthorn, papermulberry, and the like planted in the biological filtering and purifying zone, the dam, the intertidal zone, a water source conserving zone and a flood accumulating zone are respectively collected to be used as pulping raw materials. A spin coupling oxidation cleaning pulping mill and a sewage treatment plant are established in the position with intensive raw materials and convenient transportation, and the adjacent life and aquaculture sewage is intensively treated by a differential pressure filtering membrane device to be used for irrigating the crops inside and outside the dam so as to reduce the direct discharge of pollutants. Pulping waste liquor treated precipitates and sewage treated precipitates are mixed with leaves, skin, and the like to prepare methane, the electricity is generated by the methane, and the electricity and the methane are used by the mill and surrounding villages; and methane residues are made into a methyl ecological blanket for planting seedlings and seeds along the seacoast.

Description

technical field [0001] The invention is a pioneering invention in the field of environmental protection. Background technique [0002] The water pollution of rivers and lakes is becoming more and more serious. The eutrophication of ammonia nitrogen, toxic and harmful chemical substances and heavy metal residues in the water have deteriorated the water quality of more than 50% of the rivers and lakes, losing the functions of drinking water and irrigation water, and even becoming smelly water, poisonous water endangers humans. Many methods and technologies have been taken to control water source pollution, which can be roughly divided into: 1. Close the factories with serious pollution along the coast (such as paper mills, chemical plants, pharmaceutical factories, etc.). Second, establish sewage treatment plants, and even require all cities above the county level to establish sewage treatment plants. 3. Dosing liquid medicine, releasing water to dilute, artificially salvage...

AI Technical Summary

Problems solved by technology

The above method has played an important role in controlling water pollution, but it has also caused new contradictions. The closure of factories has resulted in layoffs of workers and the waste of agricultural straw; the establishment of sewage treatment plants is difficult to deal with the excessive chemical fertilizers and pesticides used in vast rural areas and domestic sewage in small and medium-sized cities; Dosing and salvage can only solve temporary emergencies but cannot cure pollution