The bacterial purification of sewage : being a practical account of the various modern biological methods of purifying sewage / by Sidney Barwise.

  • Barwise, Sidney.
Date:
1901
Catalogue details

Licence: In copyright

Credit: The bacterial purification of sewage : being a practical account of the various modern biological methods of purifying sewage / by Sidney Barwise. Source: Wellcome Collection.

Provider: This material has been provided by London School of Hygiene & Tropical Medicine Library & Archives Service. The original may be consulted at London School of Hygiene & Tropical Medicine Library & Archives Service.

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    CONTENTS. SECTION 1. INTEODUCTION. Report of Eoyal Commission on Sewage Disposal—Volume of Sewage—Storm Water—The Standard of Purification—Methods of Purification—Precipitation Tanks PACE 1 SECTION 2. PURIFICATION BY BIOLOGICAL METHODS ONLY. Two stages in Purification—Necessity for Detritus Tanks—Liquefac- tion of Sewage—Closed v. Open Septic Tanks—Anaerobic Bacteria Beds or Cultivation Tanks, (a) Upward flow, (b) Lateral flow ... ... ... ... ... ... ... 13 SECTION 3. THE OXIDATION OF SEWAGE. The scientific principles involved—Nitrification—The essentials of a Sewage Filter—^Contact Beds v. Continuous Filters ... ... 21 SECTION 4. CONTACT BEDS CONTRASTED WITH PERCOLATING FILTERS. Varieties of Contact Beds—Varieties of Filters—Difierent methods of applying Sewage—Varieties of Sewage Distributors—Size of particles of filtering medium—Advantages of Contact Beds- Advantages of Filters—No necessity for prolonged contact- Automatic appliances for working Contact Beds and Filters- Chesterfield Experiments—Intermittent sprays—Revolving Dis- tributors—Stoddart's Distributor—Results 26 SECTION 5. CONCLUSION. Relative merits of different bacterial processes—Conditions indicating what process should be adopted to meet local circumstances 46
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