Resource-Oriented Agro-sanitation Systems by Naoyuki Funamizu

Author:Naoyuki Funamizu
Language: eng
Format: epub, pdf
Publisher: Springer Japan, Tokyo

Keywords

Decentralized systemWater reuseIrrigationArid zone

12.1 Introduction

The slanted soil system is one of the simplest treatment technologies, and suitable for the concept of Resource-Oriented Sanitation System (see Chap. 1). It consists of several chambers containing soil (Fig. 12.1). These chambers are able to be stacked vertically; therefore, its footprint is very small (e.g. approximately 1.0 × 0.5 m). This system accepts direct discharge of greywater (Kondo et al. 2011); therefore, no pump and no septic tank are required. Itayama et al. (2006) and Kondo et al. (2011) performed continuous monitoring of slanted soil system which is used in real household in Japan as treatment facility to avoid water pollution of river. Itayama et al. (2006) reported averaged removal ratio of the COD, the suspended solid (SS), the total nitrogen (TN) and the total phosphorus (TP) as 85, 78, 78 and 86%.

Fig. 12.1Structure of slanted soil system.

Reprinted from Ecological Engineering, 50, Ushijima et al. (2013b) with permission from Elsevier

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