Comprehensive treating method and treating system for industrial aquatic cultivation sewage

• Main Author: JINMING PAN
• Format: Patent
• Language: English
• Published: 02.03.2005
• Edition: 7
• Subjects: CHEMISTRY; CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATERTREATMENT OR WASTE MANAGEMENT; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; METALLURGY; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The present invention discloses comprehensive treating method and system for industrial aquatic cultivation sewage. The sewage containing rich excrement, ammonia and other metabolic product as well as feed residue from the bottom of the industrial cultivation pond is treated successively through deposition of large grain excrement and feed residue in the inclined plate depositor, interception of other excrement and feed residue in the mechanical filter, and conversion of ammonia into nitrate with nitrifying bacteria in the biological filter. The treated sewage is returned to the cultivation pond circularly while the deposited, intercepted and flocculated matters are delivered to the plant filter with aquatic grass plant as medium. The mechanical filter is back flushed regularly.